智慧小車的初始程式

參考網站所寫 ....不過一直弄不懂 GPIO.BOARD和 GPIO.BCM的分別....

BOARD -> pin number

BCM     -> GPIO number

舉例來說....如果你要用GPIO 2   ....

如果你設的是BCM....就是 2...

                        BOARD ..就是 3

#!/usr/bin/python

import RPi.GPIO as GPIO

dout1 = 6 # Broadcom pin 3

dout2 = 13 # Broadcom pin 5

dout3 = 19 # Broadcom pin 7

dout4 = 26 # Broadcom pin 11

GPIO.setmode(GPIO.BCM)

GPIO.setup(dout1,GPIO.OUT)

GPIO.setup(dout2,GPIO.OUT)

GPIO.setup(dout3,GPIO.OUT)

GPIO.setup(dout4,GPIO.OUT)

GPIO.output(dout1, GPIO.LOW)

GPIO.output(dout2, GPIO.LOW)

GPIO.output(dout3, GPIO.LOW)

GPIO.output(dout4, GPIO.LOW)

while True:

     print "please input key : (a -> left, w -> front, d -> right, x -> back, c -> quit)"

     a = raw_input()

     print "you input is " + str(a)

     if a == 'd': # right

        GPIO.output(dout1, GPIO.LOW)

        GPIO.output(dout2, GPIO.HIGH)

        GPIO.output(dout3, GPIO.HIGH)

        GPIO.output(dout4, GPIO.LOW)

     elif a == 'a': # left

        GPIO.output(dout1, GPIO.HIGH)

        GPIO.output(dout2, GPIO.LOW)

        GPIO.output(dout3, GPIO.LOW)

        GPIO.output(dout4, GPIO.HIFG)

     elif a == 'x': # back

        GPIO.output(dout1, GPIO.LOW)

        GPIO.output(dout2, GPIO.HIGH)

        GPIO.output(dout3, GPIO.LOW)

        GPIO.output(dout4, GPIO.HIGH)

     elif a == 'w': # front

        GPIO.output(dout1, GPIO.HIGH)

        GPIO.output(dout2, GPIO.LOW)

        GPIO.output(dout3, GPIO.HIGH)

        GPIO.output(dout4, GPIO.LOW)

     elif a == 'c':  # quit

        break;

GPIO.output(dout1, GPIO.LOW)

GPIO.output(dout2, GPIO.LOW)

GPIO.output(dout3, GPIO.LOW)

GPIO.output(dout4, GPIO.LOW)

GPIO.cleanup()

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2/7  update...  加入聲控.....

http://0975128810.blogspot.tw/2016/02/use-raspberry-for-voice-control.html

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Reference : https://learn.sparkfun.com/tutorials/raspberry-gpio/python-rpigpio-example

Reference : http://raspi.tv/2013/rpi-gpio-0-5-2a-now-has-software-pwm-how-to-use-it